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Run a single migration file
...B) which relies on the fact that require returns an array of class names:
script/runner 'require("db/migrate/20090408054532_add_foos.rb").first.constantize.up'
Note that if you do this, it probably won't update the schema_migrations table, but it seems like that's what you want anyway.
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How to use multiple arguments for awk with a shebang (i.e. #!)?
I'd like to execute an gawk script with --re-interval using a shebang. The "naive" approach of
10 Answers
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I need to securely store a username and password in Python, what are my options?
I'm writing a small Python script which will periodically pull information from a 3rd party service using a username and password combo. I don't need to create something that is 100% bulletproof (does 100% even exist?), but I would like to involve a good measure of security so at the very least it w...
Custom CSS Scrollbar for Firefox
...uivalent to ::-webkit-scrollbar and friends.
You'll have to stick with JavaScript.
Plenty of people would like this feature, see: https://bugzilla.mozilla.org/show_bug.cgi?id=77790
As far as JavaScript replacements go, you can try:
https://github.com/mdbootstrap/perfect-scrollbar
https://github.co...
In PHP, what is a closure and why does it use the “use” identifier?
...res and functions have the same speed. Yes, you can use them all over your scripts.
As @Mytskine pointed out probably the best in-depth explanation is the RFC for closures. (Upvote him for this.)
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Controlling a USB power supply (on/off) with Linux
...ll to perform a redirect, then output something into the redirected file descriptor.
– dig
May 12 '15 at 19:26
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Echo equivalent in PowerShell for script testing
I would like to output variables and values out in a PowerShell script by setting up flags and seeing the data matriculate throughout the script.
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Count work days between two dates
...[HolDate] between @StartDate and @EndDate )
)
END
GO
-- Test Script
/*
declare @EndDate datetime= dateadd(m,2,getdate())
print @EndDate
select [Master].[dbo].[fn_WorkDays] (getdate(), @EndDate)
*/
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How to change Elasticsearch max memory size
...re referred to some previous distribution.
On Debian 8 modify the service script normally place in /usr/lib/systemd/system/elasticsearch.service, and add Environment=ES_HEAP_SIZE=8G
just below the other "Environment=*" lines.
Now reload the service script with systemctl daemon-reload and restart ...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...d; this is the current directory (which is not necessarily the same as the script's directory). It is missing in Perl 5.26+, and when Perl runs with -T (taint checks enabled).
To change the default path when configuring Perl binary compilation, set the configuration option otherlibdirs:
Configu...